The Comparative Analysis :
BMW 420i Convertible Steptronic (17 - ..) vs. Mercedes C 63 S AMG Convertible 4MATIC AMG SPEEDSHIFT TCT 9G-TRONIC (18 - ..)
€ 50,800
€ 94,000
€ 50,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 94,000
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW 420i Cabrio is slightly smaller in every dimension. It's 4.4 inches shorter, 2 inches narrower and 0.8 inches lower than the Mercedes C 63 S AMG Convertible.
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
54.5
71.9
79.4
55.3
73.9
79.4
71.9 in
Width
73.9 in
79.4 in
Width Incl. Mirrors
79.4 in
54.5 in
Height
55.3 in
110.6
182.6
111.8
187
182.6 in
Length
187 in
110.6 in
Wheelbase
111.8 in
Vehicle Weight
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
3946 lb
Curb Weight
4277 lb
4817 lb
Gross Vehicle
Weight
Weight
5027 lb
Weight Difference:
331 lb
7.74 %
General
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
F33
Generation
A205
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)

8-speed automatic transmission
Transmission
9-speed automatic transmission
Engine
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
Straight-four gasoline engine with turbocharger
Engine Type
V8 gasoline engine with two turbochargers (biturbo)
BMW B48
Engine Series
Mercedes-Benz M 177
B48-B20
Engine Code
M 177.980


4
Valves
4
4
Cylinders
8
2 L / 98 cu in
Displacement
4 L / 196 cu in
181 hp
at 5000 rpm
Power
503 hp
at 5500 rpm
BMW 420i Cabrio
181 hp
503 hp
Mercedes C 63 S AMG Convertible
199 lb‑ft
at 1350 rpm
Max. Torque
516 lb‑ft
at 2000 rpm
BMW 420i Cabrio
199 lb‑ft
516 lb‑ft
Mercedes C 63 S AMG Convertible
Performance
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
143 mph
Maximum Speed
174 mph
8.4 sec
Acceleration 0 to 62 mph
4.1 sec
62 mph
62
mph
mph
384 ft
0.000 sec
BMW 420i Cabrio
62 mph
62
mph
mph
187 ft
0.000 sec
Mercedes C 63 S AMG Convertible
▶ REPLAY
21.8 lb/hp
Weight-to-Power Ratio
8.5 lb/hp
BMW 420i Cabrio
21.8 lb/hp
8.5 lb/hp
Mercedes C 63 S AMG Convertible
Fuel Economy / Emissions
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
Fuel Economy
37 mpg
combined
23 mpg
BMW 420i Cabrio
37 mpg
23 mpg
Mercedes C 63 S AMG Convertible
32 mpg
city
16 mpg
No data
highway
29 mpg
15.9 gal
Fuel Tank Capacity
17.4 gal
592 mi
Range
395 mi
BMW 420i Cabrio
592 mi
395 mi
Mercedes C 63 S AMG Convertible
Environmental Impact
119.4 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
197 kWh
BMW 420i Cabrio
119.4 kWh
197 kWh
Mercedes C 63 S AMG Convertible
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6d-TEMP
288 g/mi (WLTP)
CO2 Emissions
415 g/mi (WLTP)
Practical Convenience
BMW 420i Cabrio
Mercedes C 63 S AMG Convertible
2
Doors
2
4
No. of Seats
4
871 lb
Maximum Payload
750 lb
10.5 cu ft
Trunk Volume
10.1 cu ft









No data
Cargo Volume (Seats Down)
No data




















